Area Code +44-9057-(570000...579999) located in Special Services, open ended time dependent charge or fixed fee up to £1.50 for BT customers, more detail is as below.
Place
International Dialing Code
: 44
International Prefix
: 00
National Prefix
: 0
National Destination Code
: 9057
Subscriber Number From
: 570000
Subscriber Number To
: 579999
National Destination Code Length
: 4
Uses National Destination Code
: Yes
National Significant Number Length
: 10
Number Type
: S (Special)
Carrier Name
: BT
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Other Information
Dialling Instructions
For trunk calls: 0 9057 570000 (Trunk Code + National Destination Code + Subscriber Number)
For international calls: 00 44 9057 570000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number)
Telephone Number List
570000 ~ 579999 (Count: 10,000)
Example:
+44-9057-570000 / 0044-9057-570000 (09057-570000 / 0-9057-570000)
+44-9057-570001 / 0044-9057-570001 (09057-570001 / 0-9057-570001)
+44-9057-570002 / 0044-9057-570002 (09057-570002 / 0-9057-570002)
+44-9057-570003 / 0044-9057-570003 (09057-570003 / 0-9057-570003)
+44-9057-570004 / 0044-9057-570004 (09057-570004 / 0-9057-570004)
... +44-9057-xxxxxx / 0044-9057-xxxxxx (09057-xxxxxx / 0-9057-xxxxxx)
... +44-9057-579995 / 0044-9057-579995 (09057-579995 / 0-9057-579995)
+44-9057-579996 / 0044-9057-579996 (09057-579996 / 0-9057-579996)
+44-9057-579997 / 0044-9057-579997 (09057-579997 / 0-9057-579997)
+44-9057-579998 / 0044-9057-579998 (09057-579998 / 0-9057-579998)
+44-9057-579999 / 0044-9057-579999 (09057-579999 / 0-9057-579999)